Smoke-filter and force-draft device for furnaces



H. R. PALMER.

SMOKE FILTER AND FORCE DRAFT DEVICE FOR FURNACES.

APPLICATION FILED 1 9 9 UG. 5| 1 I 1,352, 14:2, PatentdSept. 7, 1920.

k 2 SHEETS-$HEET l- 7'0 ,Bazlarws H. R. PALMER.

SMOKE FILTER AND FORCE DRAF T DEVICE FOR FURNACES.

. APPLICATION FILED AUGJS. 1919.

2SHEETSSHEET 2.

314 wank L Patented Sept. 7,1920.

V a citizen of the United States, residing at.

UHTED STAT SMOKE-FILTER AND FORGE-DRAFT DEVICE FOR FURNACES.

Specification of Letters Patent. I Patented gept; Z, 1920',

' Application filed August 15, 1919.} Serial no. 313,431.

To all whom it may concern:

Be it known that I, 'HARRY R. PALMER,

Harrisburg, in the county of Dauphin and State of Pennsylvania, haveinvented certain new and useful Improvements in Smoke-Filters andForce-Draft Devices for Furnaces, of which the following is aspecification.

My invention relates to improvements in a combined smoke filterer andforce draft device for furnaces. r

The object of this invention is to provide an apparatus in which thecinders, soot and heavy gasesare thoroughly washed from the discharge ofthe furnace and this washing operation, taking all of the heavyparticles from the furnacedischarge, lightens the remaining portion,which results in the'more rapid flow thereof through the stack and thusincreases the capacity of the stack without increasing. the sizethereof, and which necessarily increases the draft of the fur nace.

. Another object of my invention is to provide an apparatus of thischaracter which can be readily applied to the ordinary furnace and whichhas certain details of structure and operation herein-after more fullyset forth. v r In the accompanying drawing Figure 1 is a transversehorizontal sectional view of a furnace flue and stack showing my Vimproved apparatus applied thereto. Fig. 2 is an enlarged vertical viewtaken on the line 2-2 of Fig. 1. g Fig. 3 is an end view broken away.Referring now to the drawings; 1 represents the furnace flue which isconnected to a furnace of thecharacter in which the load thereon-israpidly varied and therefore it is necessary to rapidly increase thefuel consumption and the output of the furnace and bymy apparatus thedraft ofthe furnace is instantaneously increased in either. a forceddraft furnace or a natural draft, and thus increase theoutput of thefurnace. The flue 1 is connected to the stack 2 which, is shown of abrick form, and which is usually of a considerable length to .in-

. furnaceand stack at an angle is a pipe 3 having a vertical partition4. forming the two flnes 5 and 6. The flue 1 isprovided with a damper 7opposite the portion 4: whereby the discharge ofthe furnace can beallowed to either passdirect to the stack 2 or diverted into the flue 5.T h'efl-ues 5 and 6 are provided with dampersSand 9 where'- by the draftthrough-the same can be readily regulated. p The outer end of the flueis connected to the vertical flue 10 which is preferably made of cementsoas to be perfectly watertight. The sidewalls 11 and 12 of the flue 10are provided with spray jets or nozzles 13,

which are staggered so the spray. from the nozzles on one side willoverlap thesp'ray from the nozzles on the opposite sides and whereby theentire interior of the flue 10 is covered by the spray to fully wash thegases as they pass through the flue. The jets or nozzles 13 areconnected to.the'supply pipes 14 and 15 through which either steam orwater may pass to the jets or nozzles.

The lower endof the'flue 1O isconnected to elongated tank .16 formed)continuous therewith and in-whichis maintained a predetermined waterlevel the purpose of which will be later described. 1 Beyond the lowerend of the flue 10 the tank 16'is provided with a covered portion 17 theouter walls of which are extended downwardly as indicated at 18 into thewater in thetank so'as to form a seal :to prevent the gases from passingfrom the tank. The tank beyond the wall 18 is open as clearlyshowninFig. 2 of the drawing. The end wall2O of the open portion of thetank is/provided with a series of pipes 21,22 and 23 communicatingtherewith, one above the other. and are, provided will not discharge onthe spigot below.

The side of thetank is'provided with a dischar e 13c 25 b means of whichthe waterv and clnders, etc, may be discharged therefrom. The said pipeis provided with a valve 26 having an arm 27 the outer end'of which isprovided with a horizontally, extending pin 28. Pivotally'carriedby theend-of the tank below the spigots is allev'er 2-9.which extends parallelwith the discharge pipe and hasin one end an elongated slot throughwhich the pin 28 extends. The lever 29 as shown is intermediatelypivoted .at 31 and the other end is provided with a hereinafter morefully described.

The covered portion 17 of the tiLIlkzlS provided with an opening 33which communie cates with the fan housing 3 1. The upper end of the fanhousing is in communication with the funnel shaped member 35, which has1ts upper end 1n communlcatlon with the lower end of the flue 6, and bymeans of which an additional draft is created. It may not be foundnecessary to employ a fan in which event the funnel shaped member willbeof the shape shown in dottedlines Fig. 2, and extend down andcommunicate directly with the opening in the closed portion of thereceptacle.

In operation the damper 7 is in the position shown in Fig. 1 of thedrawings which causes the smoke, gases, etc., to pass into the flue 5,and thence downwardly through vertical flue 10. In its passage throughthis flue 10, the cinders, soot, etc., are thoroughly saturated withsteam or water whichever is found desirable and fall into the Water intank 16. This will relieve/the discharge of the furnace of all heavyparticles and make it much lighter which. increases the draft in thestack and necessarily causesa greater fuel consumption. This also makesthe discharge of the furnace much lighter in color which in somelocalities is very essential. The water from the spray nozzles keeps thetank filled to its predeterminedlevel which is very close to the'lowerend of the wall of the flue so that a portion of the smoke and gasespractically pass through the body of water. The fan aids passage of thesmoke and gases around the lower end of the wall and draws it upwardlyand discharges it into the lower end of the flue 6. It then passes fromthe flue 6 to the flue 1 beyond The spigot 24:, carried by one pipe isopened, that is the one carried bythe pipe arranged at the desired levelsothat as soon as the water reaches said pipe it flows from the tank andfills the cup shaped member 32, so that the weight of the water thereinoverbalances the valve 26, opening the same through the medium of thelevers 27 and 29, so that the water will flow from the tank through thepipe 25 carrying with it the cinders and other deposits in the tank. The

cup shaped member 32 is provided with an opening to allow the water togradually flow therefrom and whereby the valve 26 is closed and preventsthe water from passing from the tank until it has mined level.

This arrangement of parts insures a perreached the predeter- "fectwashing of the gases-to "lighten the discharge of the furnace so thatthe draft of the stack will be increased. In the, event that the fan isnot used, the natural draft of the stack draws the smoke and gases downthrough the flue around the wall and upwardly through the flue 6 and thesmoke and gases having been freed of all solids, the draft in the stackis greatly increased.

Having. thus described my invention,

what I claim and desire to secure by Letters Patent, is 1. An apparatus.of the character de-' scribed, comprising a housing having an inlet atits upper end, spray nozzles arranged in the sides of the housing, atank in communication'with the lower end of the housing, and having aportion thereof closed, and having a discharge opening in its upper end,a baffle plate between the housing and discharge opening, and means formain-- taining a predetermined water level in'said tank.- v w 2. Anapparatus 'of the character 'de scribed comprising, a housing having aninlet at its upper end, spray nozzles arranged in the sides of thehousing, a tankbelow the housing and in communication therewith, andextending'beyond one side thereof, and

a portion havinga closed upper end and having a discharge openingthere1n,a baflie plate extending downwardly from the closed end of thetank intermediate the housing and the discharge opening, a discharge atthe lower end of the tank, a valve in said discharge and means operatedby the overflow of the tank for opening the valve and maintaining thewater at a predetermined level. a

3. An apparatus of the character described, comprising a housing havingan inlet at its upper end, spray nozzles arranged in the sides of thehousing, a tankbelow the housing and in communication therewith andextending beyond one side thereof, and a portion ofthe tank havingaclosed upper end sealed with the water in the tank, a fan incommunication with the upper end of the closed portion of the tank, adischarge at the lower end of the opened portion of the tank, a valvecontrolling saiddis'charg'e, and V 2 means operated by the overflow ofthe tank for opening the valve and maintaining the water at apredetermined level.

4:. An apparatus of the character de-- said discharge, an intermediatelypivoted 1 In testimony whereof I aflix my signature;

lever on the outside of the tank, means conin the presence of twoWitnesses. necting one end of the lever to the Valve 7 V a cup shapedmember carried by the oppo V HARRY ROOS E site end of the lever, and aseries of spigots WVitnesses: V V communicating With the tank above thecup FLORENCE RAUcH,

shaped member, substantially as described. Gr. L. GULLMERRY.

It is hereby certified that in Letters Patent No.'1,352,142, grantedSeptember 7,

1920, for an improvement in Smoke-Filters and Force-Draft Devices forFurnaces, the name of the patentee is erroneously Written and printed asHarry Roos Palmer, Whereas said name should have been Written andprinted as Harry Root Palmer; and that the said Letters Patent should beread With this correction therein that the same may conform to therecord of the case in the Patent Oflice.

Signed and sealed this 17th day of May, A. D., 1921.

[SEAL] E. ROBERTSON,

Commissioner of Patents.

